WAEC - Mathematics (1994 - No. 16)
If 8x- 4 = 6x- 10, find the value of 5x,
-35
-15
-3
3
7
คำอธิบาย
8x - 4 = 6x - 10
8x - 6x = -10 + 4
2x = -6
x = -3
\(\therefore\) 5x = 5(-3)
= -15
8x - 4 = 6x - 10
8x - 6x = -10 + 4
2x = -6
x = -3
\(\therefore\) 5x = 5(-3)
= -15